diff --git a/cake/libs/model/datasources/dbo/dbo_mysql.php b/cake/libs/model/datasources/dbo/dbo_mysql.php
index 98e2cf5d2..749b9d0a6 100644
--- a/cake/libs/model/datasources/dbo/dbo_mysql.php
+++ b/cake/libs/model/datasources/dbo/dbo_mysql.php
@@ -148,14 +148,14 @@ class DboMysql extends DboSource {
 				$flags[PDO::MYSQL_ATTR_INIT_COMMAND] = 'SET NAMES ' . $config['encoding'];
 			}
 			$this->_connection = new PDO(
-				"mysql:{$config['host']};port={$config['port']};dbname={$config['database']}",
+				"mysql:host={$config['host']};port={$config['port']};dbname={$config['database']}",
 				$config['login'],
 				$config['password'],
 				$flags
 			);
 			$this->connected = true;
 		} catch (PDOException $e) {
-			$this->errors[] = $e->getMessage();
+			throw new MissingConnectionException(array('class' => $e->getMessage()));
 		}
 
 		$this->_useAlias = (bool)version_compare($this->getVersion(), "4.1", ">=");
@@ -238,7 +238,7 @@ class DboMysql extends DboSource {
 			foreach ($this->map as $col => $meta) {
 				list($table, $column, $type) = $meta;
 				$resultRow[$table][$column] = $row[$col];
-				if ($type == 'boolean') {
+				if ($type == 'boolean' && !is_null($row[$col])) {
 					$resultRow[$table][$column] = $this->boolean($resultRow[$table][$column]);
 				}
 			}
diff --git a/cake/libs/model/datasources/dbo/dbo_postgres.php b/cake/libs/model/datasources/dbo/dbo_postgres.php
index 540ec0944..9a397a0cc 100644
--- a/cake/libs/model/datasources/dbo/dbo_postgres.php
+++ b/cake/libs/model/datasources/dbo/dbo_postgres.php
@@ -130,7 +130,7 @@ class DboPostgres extends DboSource {
 				 $this->_execute('SET search_path TO ' . $config['schema']);
 			}
 		} catch (PDOException $e) {
-			$this->errors[] = $e->getMessage();
+			throw new MissingConnectionException(array('class' => $e->getMessage()));
 		}
 
 		return $this->connected;
@@ -707,7 +707,7 @@ class DboPostgres extends DboSource {
 
 				switch ($type) {
 					case 'bool':
-						$resultRow[$table][$column] = $this->boolean($row[$index]);
+						$resultRow[$table][$column] = is_null($row[$index]) ? null : $this->boolean($row[$index]);
 					break;
 					case 'binary':
 					case 'bytea':
diff --git a/cake/libs/model/datasources/dbo/dbo_sqlite.php b/cake/libs/model/datasources/dbo/dbo_sqlite.php
index c09b175e2..6819adf9a 100644
--- a/cake/libs/model/datasources/dbo/dbo_sqlite.php
+++ b/cake/libs/model/datasources/dbo/dbo_sqlite.php
@@ -114,9 +114,8 @@ class DboSqlite extends DboSource {
 			$this->_connection = new PDO('sqlite:' . $config['database'], null, null, $flags);
 			$this->_connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
 			$this->connected = true;
-		}
-		catch(PDOException $e) {
-			$this->errors[] = $e->getMessage();
+		} catch(PDOException $e) {
+			throw new MissingConnectionException(array('class' => $e->getMessage()));
 		}
 		return $this->connected;
 	}
@@ -285,7 +284,7 @@ class DboSqlite extends DboSource {
 		//	so try to figure it out based on the querystring
 		$querystring = $results->queryString;
 		if (stripos($querystring, 'SELECT') === 0) {
-			$last = stripos($querystring, 'FROM');
+			$last = strripos($querystring, 'FROM');
 			if ($last !== false) {
 				$selectpart = substr($querystring, 7, $last - 8);
 				$selects = explode(',', $selectpart);
@@ -335,9 +334,9 @@ class DboSqlite extends DboSource {
 		if ($row = $this->_result->fetch()) {
 			$resultRow = array();
 			foreach ($this->map as $col => $meta) {
-				list($table, $column, $tpye) = $meta;
+				list($table, $column, $type) = $meta;
 				$resultRow[$table][$column] = $row[$col];
-				if ($type === 'boolean') {
+				if ($type == 'boolean' && !is_null($row[$col])) {
 					$resultRow[$table][$column] = $this->boolean($resultRow[$table][$column]);
 				}
 			}
diff --git a/cake/tests/cases/libs/model/datasources/dbo/dbo_mysql.test.php b/cake/tests/cases/libs/model/datasources/dbo/dbo_mysql.test.php
index 1e4c0ed93..ff462f86e 100644
--- a/cake/tests/cases/libs/model/datasources/dbo/dbo_mysql.test.php
+++ b/cake/tests/cases/libs/model/datasources/dbo/dbo_mysql.test.php
@@ -178,19 +178,19 @@ class DboMysqlTest extends CakeTestCase {
 
 		$this->assertTrue((bool)$this->model->save(array('bool' => 5, 'small_int' => 5)));
 		$result = $this->model->find('first');
-		$this->assertIdentical($result['Tinyint']['bool'], '1');
+		$this->assertIdentical($result['Tinyint']['bool'], true);
 		$this->assertIdentical($result['Tinyint']['small_int'], '5');
 		$this->model->deleteAll(true);
 
 		$this->assertTrue((bool)$this->model->save(array('bool' => 0, 'small_int' => 100)));
 		$result = $this->model->find('first');
-		$this->assertIdentical($result['Tinyint']['bool'], '0');
+		$this->assertIdentical($result['Tinyint']['bool'], false);
 		$this->assertIdentical($result['Tinyint']['small_int'], '100');
 		$this->model->deleteAll(true);
 
 		$this->assertTrue((bool)$this->model->save(array('bool' => true, 'small_int' => 0)));
 		$result = $this->model->find('first');
-		$this->assertIdentical($result['Tinyint']['bool'], '1');
+		$this->assertIdentical($result['Tinyint']['bool'], true);
 		$this->assertIdentical($result['Tinyint']['small_int'], '0');
 		$this->model->deleteAll(true);
 
@@ -3367,4 +3367,18 @@ class DboMysqlTest extends CakeTestCase {
 		$this->assertTrue(Set::matches('/Comment[id=2]', $result));
 		$this->assertFalse(Set::matches('/Comment[id=10]', $result));
 	}
+
+/**
+ * @expectedException MissingConnectionException
+ * @return void
+ */
+	function testExceptionOnBrokenConnection() {
+		$dbo = new DboMysql(array(
+			'driver' => 'mysql',
+			'host' => 'imaginary_host',
+			'login' => 'mark',
+			'password' => 'inyurdatabase',
+			'database' => 'imaginary'
+		));
+	}
 }